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State Research and Development Credit Exchange Receivable - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Accounts and Other Receivables [Line Items]
Percentage of credit exchange receivable	65.00%
Estimated amounts receivable under program	$ 380,000	$ 298,000

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- Details

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- Definition

Estimated amounts credit exchange receivable.

+ References

No definition available.

+ Details

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- Definition

Percentage of credit exchange receivable.

+ References

No definition available.

+ Details

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